4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers63.5 × 99.7 mm
Hackpad pv
premvy/MacroPad1RP2040-powered 12-key Macropad | Kicad | Python | Solidworks |
- Size
- 63.5 × 99.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 38
- Pads
- 164
- Tracks, vias
- 320, 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Feb 2026
- Updated
- 17 Aug 2026
Overview
Hackpad pv is an open-source printed circuit board by premvy, from the premvy/MacroPad repository on GitHub, published under the MIT licence. It is a 2-layer board of 63.5 × 99.7 mm with 38 parts on 38 nets, routed with 320 tracks and 5 vias.
It is built around the SK6812MINI-E. Its parts include 24 diodes, 12 switches and 1 IC. It belongs with the keyboards and input and lEDs and displays boards and the RP2040 boards of this library.
Main components
1README
README.md⌨️ Macropad
A custom 12-key macropad with per-key RGB lighting and an OLED display, powered by the Seeed XIAO RP2040. Designed with KiCad, SolidWorks, and Python.
Bill of Materials (BOM)
- 1x Seeed XIAO RP2040
- 12x Mechanical Switches
- 12x 1N4148 Diodes
- 12x SK6812 MINI-E RGB LEDs
- 1x 0.91" OLED Display (I2C)
- 1x Custom 3D Printed Case
Project Gallery
1. System Schematic
The electrical blueprint detailing the RP2040 pinout, the 3x4 diode matrix logic, and I2C bus wiring for the peripherals.
2. PCB Layout & Routing
2-layer PCB routing in KiCad. Significant focus was placed on trace management for the addressable LED data line and maintaining a clean ground plane.
3. PCB Visualization
3D model used to validate component footprints and mechanical clearances before fabrication.
4. Enclosure CAD
Mechanical enclosure modeled in SolidWorks. The design features internal standoffs for the PCB and a precision-cut port for the XIAO’s USB-C interface.
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 12 | SK6812MINI-E | PCM_marbastlib-various:LED_6028R | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12 |
| 12 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12 |
| 1 | OLED | Display:Adafruit_SSD1306 | OL1 |
| 1 | XIAO-RP2040-DIP | sad:XIAO-RP2040-DIP | U2 |
Questions
How big is the Hackpad pv PCB?
It measures 63.5 × 99.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad pv use?
38 parts, built around the SK6812MINI-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hackpad pv KiCad files?
From the premvy/MacroPad repository on GitHub, at the commit this page was made from: the board is PCB/hackpad_pv.kicad_pcb and its schematic PCB/hackpad_pv.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hackpad pv design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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